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util/llvmdisassembler: build with ac++-clang

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This change updates the documentation on how to manually build LLVM
3.3 or 3.4, and removes the forced -fno-rtti compiler flag from
util/llvmdisassembler/: The flag breaks compilation with (not yet
released) AspectC++ 2.0, which complains about dynamic_cast (used in
some active aspect headers that should not affect llvmdisassembler at
all) being unusable with -fno-rtti.  It's probably not a good idea to
compile only a part of Fail* with -fno-rtti anyways.

Note that the Debian and Ubuntu LLVM packages are built with
REQUIRES_RTTI=1, too.

Change-Id: I9891cf074d4201df786f7f5a9b96033e18832562
This commit is contained in:
Horst Schirmeier
2014-04-27 17:31:47 +02:00
parent 73843fa634
commit 3869cebde3
2 changed files with 6 additions and 3 deletions
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6
doc/how-to-build.txt
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@ -19,9 +19,13 @@ Required for Fail*:
<http://akut.aspectc.org>. Make sure you use the 64-bit version if running <http://akut.aspectc.org>. Make sure you use the 64-bit version if running
in a 64-bit environment. in a 64-bit environment.
- optional: - optional:
* LLVM 3.3 (needed for several importers in tools/import-trace) * LLVM 3.3 or 3.4 (needed for several importers in tools/import-trace)
(compiles/links with 3.1 or 3.2, but fails to properly import information (compiles/links with 3.1 or 3.2, but fails to properly import information
from ELF binaries not compiled with -ffunction-sections) from ELF binaries not compiled with -ffunction-sections)
- configured with, e.g., --enable-optimized --disable-assertions
--disable-werror
- built with "make REQUIRES_RTTI=1" (the Debian/Ubuntu packages already
come built this way)
* a MySQL 5.0+ or MariaDB 5.1+ (MariaDB 5.5 recommended) server * a MySQL 5.0+ or MariaDB 5.1+ (MariaDB 5.5 recommended) server

3
src/core/util/llvmdisassembler/CMakeLists.txt
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@ -11,8 +11,7 @@ set(SRCS
include(FindLLVM) include(FindLLVM)
# compiling without -fno-rtti fails even when LLVM is not built with that flag set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LLVM_CXX_FLAGS}" )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LLVM_CXX_FLAGS} -fno-rtti" )
add_library(fail-llvmdisassembler ${SRCS}) add_library(fail-llvmdisassembler ${SRCS})
target_link_libraries(fail-llvmdisassembler fail-sal) target_link_libraries(fail-llvmdisassembler fail-sal)